CVE-2021-44856 - Vulnerability Details - OpenCVE

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. A title blocked by AbuseFilter can be created via Special:ChangeContentModel due to the mishandling of the EditFilterMergedContent hook return value.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Vendors	Products
Mediawiki	Mediawiki

Configuration 1 [-]

OR	cpe:2.3:a:mediawiki:mediawiki::::::::
	cpe:2.3:a:mediawiki:mediawiki::::::::
	cpe:2.3:a:mediawiki:mediawiki:1.37.0:-::::::
	cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc0::::::
	cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc1::::::
	cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc2::::::

No data.

References

Link	Providers
https://nvd.nist.gov/vuln/detail/CVE-2021-44856
https://phabricator.wikimedia.org/T271037
https://security.gentoo.org/glsa/202305-24
https://www.cve.org/CVERecord?id=CVE-2021-44856

History

Mon, 14 Apr 2025 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2022-12-26T00:00:00.000Z

Updated: 2025-04-14T15:49:47.008Z

Reserved: 2021-12-13T00:00:00.000Z

Link: CVE-2021-44856

Vulnrichment

Updated: 2024-08-04T04:32:13.284Z

NVD

Status : Modified

Published: 2022-12-26T06:15:10.737

Modified: 2025-04-14T16:15:18.540

Link: CVE-2021-44856

Redhat

Severity : Low

Publid Date: 2022-12-26T00:00:00Z

Links: CVE-2021-44856 - Bugzilla

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2021-44856", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2025-04-14T15:49:47.008Z", "dateReserved": "2021-12-13T00:00:00.000Z", "datePublished": "2022-12-26T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2023-05-21T21:07:08.509Z"}, "descriptions": [{"lang": "en", "value": "An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. A title blocked by AbuseFilter can be created via Special:ChangeContentModel due to the mishandling of the EditFilterMergedContent hook return value."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "unknown"}]}], "references": [{"url": "https://phabricator.wikimedia.org/T271037"}, {"url": "https://security.gentoo.org/glsa/202305-24"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "n/a"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T04:32:13.284Z"}, "title": "CVE Program Container", "references": [{"url": "https://phabricator.wikimedia.org/T271037", "tags": ["x_transferred"]}, {"url": "https://security.gentoo.org/glsa/202305-24", "tags": ["x_transferred"]}]}, {"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-754", "lang": "en", "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2025-04-14T15:49:08.587806Z", "id": "CVE-2021-44856", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-04-14T15:49:47.008Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://phabricator.wikimedia.org/T271037", "tags": ["x_transferred"]}, {"url": "https://security.gentoo.org/glsa/202305-24", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T04:32:13.284Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2021-44856", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-04-14T15:49:08.587806Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-754", "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-04-14T15:49:41.834Z"}}], "cna": {"affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"status": "unknown", "version": "n/a"}]}], "references": [{"url": "https://phabricator.wikimedia.org/T271037"}, {"url": "https://security.gentoo.org/glsa/202305-24"}], "descriptions": [{"lang": "en", "value": "An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. A title blocked by AbuseFilter can be created via Special:ChangeContentModel due to the mishandling of the EditFilterMergedContent hook return value."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "n/a"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2023-05-21T21:07:08.509Z"}}}, "cveMetadata": {"cveId": "CVE-2021-44856", "state": "PUBLISHED", "dateUpdated": "2025-04-14T15:49:47.008Z", "dateReserved": "2021-12-13T00:00:00.000Z", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "datePublished": "2022-12-26T00:00:00.000Z", "assignerShortName": "mitre"}, "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*", "matchCriteriaId": "99942EE7-37A1-42CD-B392-8ED9362430E2", "versionEndExcluding": "1.35.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*", "matchCriteriaId": "7377A8D6-3B2E-4FD6-820A-4CD632158111", "versionEndExcluding": "1.36.3", "versionStartIncluding": "1.36.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mediawiki:mediawiki:1.37.0:-:*:*:*:*:*:*", "matchCriteriaId": "0B3400A0-D77C-45D4-8868-73AF0B82B6B0", "vulnerable": true}, {"criteria": "cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc0:*:*:*:*:*:*", "matchCriteriaId": "F533BF3B-6FBC-4CA6-A645-A321E20B9804", "vulnerable": true}, {"criteria": "cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "7CBE66AB-8BE5-4A96-9B90-8F3238AE7CBC", "vulnerable": true}, {"criteria": "cpe:2.3:a:mediawiki:mediawiki:1.37.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "18A9BF2D-7DDF-4C9D-838A-D8BA511A2CD6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. A title blocked by AbuseFilter can be created via Special:ChangeContentModel due to the mishandling of the EditFilterMergedContent hook return value."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en MediaWiki antes de 1.35.5, 1.36.x antes de 1.36.3 y 1.37.x antes de 1.37.1. Se puede crear un t\u00edtulo bloqueado por AbuseFilter a trav\u00e9s de Special:ChangeContentModel debido al mal manejo del valor de retorno del gancho EditFilterMergedContent."}], "id": "CVE-2021-44856", "lastModified": "2025-04-14T16:15:18.540", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2022-12-26T06:15:10.737", "references": [{"source": "cve@mitre.org", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://phabricator.wikimedia.org/T271037"}, {"source": "cve@mitre.org", "url": "https://security.gentoo.org/glsa/202305-24"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://phabricator.wikimedia.org/T271037"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/202305-24"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-754"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-754"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}